US1474492A - Hay loader - Google Patents

Description

Nov. 20 ,'1923. 1,474,492

H. w. PlERsoN HAY LOADER Filed Jan. 5, 1920 2 SheetsShet 1 INVENTOR ZM/" #50567607 a wyrhjbw Nov. 20,1923. 1,474,492

H. W. PIERSON HAY LOADER yFiled Jan. s, 1920 2 sheets-sheet 2 INVENTOR Patented Nov. 20, .1923

'HARRY WILLIAVI PIERSON, OF PRINCETON, ILLINGIS; W. PIERSON ADMINIS- 'i TRATRIX OF SAID :HARRY W. PERSON, IDECVEASEID.l

HAY LOADER,

Application filed-Januaryf, 1920. Serial No, 349,155.

To all wlw/m, t may concern.'

Be it known that I, HARRY W'. PinRsoN, a n citizen of the United States, residing atV Princeton, in the county of BureauV and State of Illinois, have invented certain new and useful Improvements in Hay Loaders, ofwhich the followingis a specification.

This invention reiates to hay loaders of the so-called cylinder type which employ a lcontinuously moving carrierv provided lwith teeth or prongswhich dip down into hayv and act to elevate the same along an inclined deckv to the pointlof discharge.

The object of the present invention is vto provide means for positively holding the rake teeth in their projected position dui'- ing the elevation of the hay to the point of discharge, so that the'pressure of the hay will not tend to bend backor displace the teeth while the pressure of the load is being` I chains 23 which are carried upon. a lower carried thereby.

The invention further relates to the means provided for stripping the hay from the teeth Vand for permitting the teeth to turn back as they pass under the stripper bar, andv thereafter resume their projected position, so that they will always approach the point of contact with the hay on the ground in projected oroperative position.

In the drawings:

Figure 1 is a side elevation of the loader;

Fig. 2 is a perspective view `looking upwardly from beneath toward the discharge end of the loader; and

Fig. 3 is a detail of the spring connection between oneof the raket heads and the terminates at each end in an angularlydisposed finger 3.3' which .lies` outside of the carrier chain. y

The loader is built upon a rectangular frame comprising side rails 10, `front cross a sills 11, and a rear cross sill 12. A suitable bracket 13 is provided forthe attachmentr of the draw-bar of a tractor. and castor wheels 14; carried by spindles 15 at the front outer'corners of the framework, in combination with large ground wheels '16"journaled in bearings 16al on the side rails, serve to support the frame at a proper elevation abovel the ground.

The main frame carries an inclined supporting frame comprising side Fails 17 which are braced and supported by brace bars 18, and `the lside rails of the supporting .frame serve to carry a deck, comprising sides 19 and a slatted bottom 20 Vupon which thehay f travels from the ground to the point of dis-f.V

charge to the hay wagon. The deck is adjustably mounted .withvrespect to thesupporting frame. by means of a pair of links A214-21 ;set in yoblique relation with respect to the rails 17 and the sides 19. and a spring 22 connected respectively to the side rail' 17 and the deck side 19, serves to hold the parts in abutting relationship, as shown inv full linesvinFig; 1, the spring beingprovided so that the deck may on occasion be forceddown by the pressure ofthe-hay into the position indicated by dotted lines, which adjustment is desirablevin. the raking of heavy hay in order to afford a larger measure of clearance between the slatted bottoni of the deck and the raking teeth.

1 The raking mechanism .comprises yendless pinionv 29 on the ground wheelk axle, so that as the hay loader advances the power dei rived from the ground. wheels will rotatev the driving sprocket and impart a continuous travel Yto lthe sprocket chains.

The sprocket chains have mounted thereon a plurality of transversely mounted rake heads 35, each'of which comprises a tubular portion 31 and a backing bar 32, best shown in Fig. 3. Each of the tubular members plane ofthe carrier chains, and isl adapted torride lin an adjacent guideway'presently to be described. The tubular portions of the rake heads are'journaled within niountings `Set formed on the adjacent link sections of" purposes into a position in substantial par allelism' with theichaiiis'as occasion ma re quire. The rake teethBO are connectedto thetubular portions of'the rake head by ceiling their inner lends around vthe ktubular :the spring,

" innige. Y

portions and securing them in any suitable manner against rotative movement thereon. v

In order to normally return the rake teeth to outstanding position after they have been laid back for stripping purposes, each of the rake heads is provided at each endwith a spring 36 which is connected at one end to Vthe intermediate portion of anY arm 36a which projects from the rake head backing bar 32, and at its other end to one of the` links of the chain, sothat asthe rake teeth are laid back a tension will be exerted on which will act to restore the arts to normal outstanding position as soon as the rake teeth are free to return, the con-- tact of thek arm 36a with the spring serving to limit the return movement, as indicated At the' upper end of the loader andnbetween the side rails 17 is a stripper bar 3'?V which also serves as a connectionv for the side rails. This stripper bar lies closely adjacent `to the peripheries ofthe upper sprocket wheels so that as the projecting rake teeth pass undernthe stripper bar they will be laid back and the hay will be stripped therefrom as the teeth pass under the bar, this stripping action taking place under spring tension, with the result that as soon as the rake teeth have cleared the stripper bar they will return under spring tension .to their outstanding position. The rstripper bar coaets with a plurality of longitudinally arranged stripper'rods 38 -which are connected at their upper ends to the stripper bar, which rods Vare-.in spaced rela-- charge.

sprocket to aHord an enlarged throat for theV easy discharge of the hay. Most of the hay willbe thus discharged before the stripping point isl reached, but if any hay remains on theraketeeth the same willbe stripped off beforethe teeth begin their return movej ment, so that the operating parts will be v'thoroughly cleaned and any cloggingy ofhay prevented. i Y Y In order to positively hold the teeth in their projected position during .the gathering and elevating movements of the rake teeth, and while the latter are subjected to the pressure of the hay, the fingers 33 are pro-vided, which travel within guideways 39 formed on the inner faces of the side rails 17, which guideways lie immediatelyoutside.

of and in parallel relation with the adjacent sprocket chains. Within said guideways the fingers 33 on each end of each of the rake heads `travel until the discharge point is reached. The'gu'ideways terminate at some distance below the stripper bar 37 so that at i the discharge point, the rake teeth are free` to turn backto permit the hay to? dischargeV andy to pass under the stripper bar. At this point in the travel of the rake teeth they will be held in projected position only by the tension of the springs 36, and not positivelyas heretofore.

Eachof the side guideways 39 cio-operates with a curved guideway 40 formed on the inner face of a disk or plate 41, which lies adjacent to the driving sprocket .'onthe same vside 0f the machine, so that asthe rake teeth approach the hay gathering point'the fingers 33 will, as the chain passes around the driving sprocket,V` enter the vcurved guideways 40 which merge into the side guideways 39, so that the rake teeth will be positively held in their projected positionas they pass around the driving sprockets and. Y

begin their gathering operation.

The operation of theydevice maybe briey summarizedas follows: As `the machine advances, theV ground wheels will bed rotated,'and power derived therefrom. will j,

be utilized to drive vthe lower sprocket wheels, so that the endless chains will `be operated and the rake heads and rake teeth moved to gather and elevate'the hay. The V` rake teeth, during the gathering and elevating operations, will be held against retraction both by the 4positive action ofthe guideways and by the action of the springs.

This condition will continue until the disi charge point is reached, at which time the rake heads and rake teeth will be released from positive supportV and allowed torotate under spring tension for the purpose ofdis-Y A charging the hay and for permitting the rake teeth to pass under the strippingV bar. j

Thereafter the teeth being relieved from the pressure of the hay, will be returned to outstanding positionby the action of thev springs, so that the supporting fingers will-Tr be in position to enter the curvingguide-l ways as the rake heads approach the gathering point.V A i Y The arrangementisonewhich insures a positive cleaning of the rake teeth after each discharge, and lwhich laffords adequate means for preventing accidental recession of the teeth when serving the function of elevating a heavy cut ofvhay, and-the provision Y of the stripping rods serves to insure against accidental lifting of .the'hay to apoint where it might interfere Vwith the action of the moving portions of the mechanism.

I claim:

l. In a liay loader, the combination of a supporting frame, ground wheels, endless chains driven by the groundwheels, rake heads rotatably mounted upon the *endlessV guides for; engagingthe ngers to positively hold.4 theA rake. teeth? in "projected position during. the gathering and `elevating' operations', lsaid guides terminating at the discharging point to permit airecession ofthe rake4 teeth, and Aa spring' foreach .rake head for permitting the teeth when released to return under spring tension, substantially as described.

2. In a hay loader, the combination of a sup-porting frame, ground wheels, endless chains driven by the ground wheels, rake heads rotatably mounted upon the endless chains, rake teeth carried by the rake heads, fingers connected with the rake heads, `uides for engaging the fingers to positively old the rake teeth in projected position during the gathering and elevating operations, said guides terminating at the discharging po-int to permit a recession of the rake teeth, a spring for each rake head for permitting the teeth when released to recede under spring tension, and a transversely extending stripper bar positioned to be engaged by the teeth when the fingers are released from the guideways, substantially as described.

3. In a hay loader, the combination of a Y supporting frame, ground wheels, endless chains driven by the ground wheels, rake heads rotatably mounted upon thefendless chains, rake teeth carried by the rake heads, fingers connected with the rake h'eads, guides for engaging the fingers to positively hold the rake teeth in projected position during the gathering and elevating opera.- tions, said guides terminating at the discharge point to permit a recession of the rake teeth, a. spring for each rake head for permitting the teeth when released to recede under spring tension, a transversely extending stripper bar positioned -to be engaged by the teeth when the fingers are released from the guideways, and longitudinally extending stripper rods thro-ugh which the teeth project, substantially as described.

4. In a hay loader, the combination of a main frame, ground wheels supporting the main frame, an inclined elevator frame, a deck below the elevator frame along which the hay is conveyed, endless chains carried by the elevator frame, driving sprockets driven by the ground wheels for operating the endless chains, rake heads Arotatably mounted upon the endless chains and provided ivith guide fingers, rake teeth carried by the rake heads, guides adapted to be engaged by the guide fingers for holding the rake teeth in projected position, the chain being operated to elevate the hay beneath the chains and along the underlying deck, the guides terminating at the discharging point to permit a recession of the teeth for discharging the hay, and springs for' restoring the,` teeth to vprojected position afternthe discharging operation, 'substantially as described. l 5. In a hay loader, the combinationlof a mainframe, ground wheels supportingthe` vided with guide fingers, rake teeth carried by the rake heads, guides adapted to berengaged by the guide fingers for holding the rake teeth in projected position, the chain being operated toV elevate the hay beneath the chains and along the underlying deck,"

the guides terminating at the discharging point to permit a recession of the teeth `for discharging the hay, springs for restoring the teeth to projected position afterV the` discharging operation, and a transversely arranged stripper bar adapted tobe engaged by the rake teeth `after the release of the fingers from the guideways for laying back the teeth under spring tension and stripping the hay therefrom, substantially as described.

6. In a hay loader, the combination of a supporting frame, an elevating frame, ground wheels, endless chains driven by the ground wheels, rake heads mounted upon the endless-chains, rake teeth carried by thev rake heads, a deck carried by the elevating frame below the endless chains, and link and spring connections between the deck and the elevating frame for allowing the deck to accommodate itself to excess pressure of hay, substantially as described..

7. In a hay loader, the combination of a supporting frame, an elevating frame, ground'wheels, endless chains driven by the ground wheels,` rake heads mounted upon the endless chains, rake teeth carried by the rake heads, a deck carried bythe elevating frame below the endless chains, link and springA connections between the deck and the. elevating frame for allowing the `,deck toqaccommodate itself-to the excess pressure of hay. and stripperv rods extending longitudinally of the elevating frame through whichthe rake teeth project when in contiguous relation to the deck, substantially as described.

V8. In a hay loader, the combination of a supporting frame, an elevating frame, ground wheels, endless chains driven by the ground wheels, rake heads mounted upon the endless chains, rake teeth carried by the rake heads, a deck, obliquely arranged links connecting the deck to the elevating frame, and a spring Jfor 'holding the deck in abutting relation withV respect to the elevating soA Mfraneand dapted to perrnlt thedeel; to

swing back 'from the frame Vunderethe e cess pressu'e of the hayfsubstantallyes Vdescribed Y 9. In a hay loader, the combination of a,V

supporting frame, an' elevating frame,

' ground Wheels,v eleva-tinggf-k means, a 'deck carried by the elevating frame' below lthe elevating means,- and link and spring connections between the deck and the elevatingV K10 Y frame for allowlng the deck Ato Vaccommodate tselfrto excess pressure 'of hay,V Substantally as descfbed.V l

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